The evolution of electric vehicle (EV) technology is accelerating at an unprecedented pace, driven by the need for greater efficiency and reduced charging times. One of the most groundbreaking advancements in this field is being spearheaded by researchers at UNIST. This team, led by Professor Franklin Bien from the Department of Electrical and Electronic Engineering, has unveiled a pioneering wireless charging system that allows EVs to be charged while in motion, effectively eliminating the anxiety associated with finding a charging station. Published in the esteemed journal Applied Energy, this research presents a significant step forward in addressing the challenges faced by EV users today.
The innovative system relies on a network of wires that generates a robust magnetic field, enabling seamless power transfer to vehicles without the complications associated with traditional methods that use ferromagnetic materials. As vehicles traverse designated power supply tracks, they benefit from a powerful circular magnetic field created by an electromagnetic generator. This unique approach allows vehicles to navigate freely, moving both forward and backward, significantly enhancing operational flexibility. The technology is designed to circumvent the limitations of existing systems, which often suffer from high costs and durability issues, particularly those that incorporate ferromagnetic components.
In addition to the physical infrastructure, the research team has developed sophisticated algorithms aimed at optimizing both the design of power supply tracks and the power receivers embedded in electric vehicles. This dual focus results in a remarkable increase in power transfer efficiency—reportedly up to 90%. This efficiency rating sets a new standard for wireless charging technologies, potentially transforming the landscape of electric vehicle use by significantly reducing the time needed to charge batteries on the move.
An essential aspect of implementing any new technology is ensuring its safety and regulatory compliance. The research team has meticulously conducted comprehensive safety verifications to meet the rigorous standards set by organizations such as the Institute of Electrical and Electronics Engineers (IEEE) and the International Commission on Non-Ionizing Radiation Protection (ICNIRP). Professor Bien emphasized the necessity for dynamic wireless charging technologies to support not only lateral movement but also vertical mobility—paving the way for an adaptable transportation system that meets the demands of modern society.
Impact on Electric Vehicle Adoption
The implications of this wireless charging technology extend far beyond simply enhancing convenience for EV users. As Professor Bien’s team continues to refine and develop this innovative system, it holds great potential for mitigating two of the most significant barriers to widespread electric vehicle adoption: long charging times and limited driving ranges. First author Hyunkyeong Jo noted that if this technology matures and is integrated into electric vehicles, it could usher in a new era where electric cars are as convenient as their fossil fuel counterparts, substantially influencing consumer choice and accelerating the global shift towards sustainable transportation.
The ongoing advancements in wireless charging technology represent a pivotal moment in the journey toward a greener future, elevating electric vehicles from mere alternatives to viable primary transportation solutions for all.